unity error: Setting the parent of a transform which resides in a prefab is disabled to prevent data corruption

Question

I want to create dynamically ui button,

I have one prefab,

here is code:

  public class SFSConnect : MonoBehaviour {
        SmartFox sfs;

        public GameObject cnv1;
        public GameObject potchPrf;
        public Canvas fCanvas;
    void Start () {
    fCanvas = cnv1.GetComponent<Canvas> ();

            Button ptf1 = potchPrf.GetComponent<Button> ();

            Instantiate(ptf1,new Vector3 (0, 0, 10), Quaternion.identity);


            potchPrf.transform.SetParent (fCanvas.transform);
    }

}

I tried thousands of posts, but nothing happened

score 7 · Accepted Answer · answered Sep 05 '17 at 22:02

7

The problem is likely from potchPrf.transform.SetParent (fCanvas.transform); and this means that you are trying to modify a prefab. You can't change the parent of a prefab from code.

Maybe you wanted to set the parent of the instantied object?

If that's the case then store it in a variable

GameObject uiObj = Instantiate<GameObject>(ptf1,new Vector3 (0, 0, 10), Quaternion.identity);
uiObj.transform.SetParent (fCanvas.transform);

Also, don't attempt to make a prefab a parent of a GameObject. You run into this problem. Both the GameObject you want to set as a parent and the target(child) GameObject should never be a prefab.

If your UI is not complicated, I would totally avoid doing this and just use the DefaultControls to create UI dynamically. See this post with so many examples on how to use DefaultControls to create UI controls.

answered Sep 05 '17 at 22:02

Programmer

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Thanks! I use `DefaultControls` it worked!. So how to change width and height of uiButton? – Muhammet Demir Sep 05 '17 at 22:21
You mean the position of the UI object? – Programmer Sep 05 '17 at 22:26
No, change the scale of the UiObject – Muhammet Demir Sep 05 '17 at 22:30
1

`RectTransform.sizeDelta` is used to resize a UI in the x,y axis. – Programmer Sep 05 '17 at 22:32
4 some reason this isn't valid in my case. I'm trying to modify the object parent to something that lies in Prefebs. (Can I do that?). Or should I ask another question (If it is different from this situation?) – Waseem Ahmad Naeem May 31 '18 at 06:24
@WaseemAhmadNaeem I think you will need to provide a screenshot of where the object is and the Hierarchy and where the object prefab it is referencing points to. This means creating a new question. – Programmer May 31 '18 at 06:28

unity error: Setting the parent of a transform which resides in a prefab is disabled to prevent data corruption

1 Answers1